In the United States, Joe Biden announced stricter rules on Wednesday February 7 to limit the presence of these deadly pollutants in the air. From now on, the annual concentration of fine particles must not exceed 9 micrograms per cubic meter of air, compared to 12 previously.
Starting in 2032, when it comes into full force, this new regulation will prevent 4,500 premature deaths and 290,000 lost work days each year. Donald Trump, for his part, has already announced that he would abolish all of Joe Biden's environmental standards, in the event of victory next November.